Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfd0e47f453c7f43…

MALICIOUS

PDF

41.2 KB Created: 2020-08-06 15:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8f9f9b57515e6c6167c0769402c0c53 SHA-1: e6512a05064e10083015095015402a48075d25d9 SHA-256: dfd0e47f453c7f43cfe394e39ac162b6441b2c1e7bb4f71c3e92b1c9ee4480e3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, characteristic of a link farm designed to obscure malicious destinations. The primary redirector URL, https://ttraff.com/pify?keyword=difference+between+phonetics+and+phonology+examples+pdf, is flagged as malicious. The document body, though partially corrupted, contains text related to the URL's keyword, suggesting a lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=difference+between+phonetics+and+phonology+examples+pdf In PDF document text
    • http://files.usfproject-benitez.com/uploads/1/3/1/4/131483955/366b73.pdfIn PDF document text
    • http://files.youthovergunsny.org/uploads/1/3/0/7/130739571/xamonagozugob.pdfIn PDF document text
    • http://wigonato.wellbee-ing.com/uploads/1/3/1/4/131408024/4962497.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/pururekinuvotopozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6272/8606/files/80033513964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7634/4225/files/73183219259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/82104403392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/4804932860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/59546199181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6181/9045/files/45155593366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9547/2794/files/product_business_plan_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/vajibev.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D94 5968 bytes
SHA-256: db7a222607d182bd2bd82ca52d3eac739232688c5a30e5e7688a1eeab87cf8f6
font_01_sfnt_off000071e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E5 10500 bytes
SHA-256: 595a09b8b7a3582f1185f3fe22f1f356a9fc1c9bcece2bad0a4ec3fa4c9b5698

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